How to Grow Red Goliath Pepper
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Red Goliath Pepper
Capsicum annuum
vegetableRed Goliath is a large bell pepper variety known for its impressive size, thick walls, and sweet flavor when fully mature. These peppers are among the largest varieties available, often reaching 4-5 inches in diameter with a blocky shape. They transition from green to deep red as they ripen, making them striking both in the garden and kitchen.
When should you plant Red Goliath Pepper in your zone?
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Example Red Goliath Pepper timeline · Pittsburgh, PA (Zone 6b)
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Plant Red Goliath Pepper
Around Apr 17Near Pittsburgh's average last spring frost.
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Tend & protect
Late spring–summerWatering, feeding, and pest-watch reminders.
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Harvest Red Goliath Pepper
Around Jun 26≈ 70 days after planting
Sample dates for Pittsburgh, PA. Sign up to get exact Red Goliath Pepper dates for your own zip code.
Growing Conditions
Soil
Growing Zones
Find your zone →Thrives in zones 5-10; grow as annuals in cooler zones with season extension
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Seed & Seedling
6-8 weeksSeeds germinate in 7-14 days under warm conditions (75-85°F). Seedlings develop cotyledons, then true leaves appear.
Start seeds indoors 8-10 weeks before last frost. Maintain soil temperature of 70-80°F. Provide bright light and keep soil moist but not waterlogged.
Transplant & Establishment
2-3 weeksYoung plants develop a root system and 4-6 true leaves. Ready for transplanting outdoors after last frost and soil warms.
Harden off seedlings over 7-10 days. Plant outdoors when soil reaches 60°F minimum. Space 18 inches apart. Mulch around base.
Vegetative Growth
4-6 weeksPlant grows bushy with multiple stems and leaves. Small white flowers begin to appear at 6-8 weeks after transplanting.
Maintain consistent watering and fertilize every 2-3 weeks with balanced fertilizer. Stake or cage plants early to support heavy fruit. Remove any flowers that appear before plant is 12 inches tall.
Flowering & Fruit Set
3-4 weeksSmall white flowers with yellow centers bloom prolifically. Flowers set into tiny green peppers. This stage is critical for fruit development.
Maintain consistent watering (critical—stress reduces fruit set). Switch to phosphorus-rich fertilizer to encourage fruiting. Ensure 8+ hours of direct sun daily. Provide support for developing fruit weight.
Fruit Development & Ripening
4-6 weeksGreen peppers enlarge rapidly to impressive size (4-5 inches). Peppers thicken and mature green peppers transition to deep red color, indicating full ripeness and peak sweetness.
Continue consistent watering and feeding. Support branches with fruit. Red Goliaths are heavy; adequate support prevents branch breakage. Harvest mature red peppers to encourage more flowering.
Companion Planting
Plan your garden →Plant with:
Avoid planting near:
Common Pests
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Spray with insecticidal soap or neem oil; encourage beneficial insects like ladybugs
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Mist plants regularly to increase humidity; use miticide or neem oil if severe
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Remove affected fruit; use pheromone traps; apply spinosad if population is high
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Use row covers on young plants; apply neem oil or spinosad for adults
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Yellow sticky traps; spray with insecticidal soap or neem oil
Uses
Fresh eating and roasting
CulinaryRed Goliath peppers have thick, sweet walls perfect for eating fresh, slicing into salads, or roasting whole. Their large size makes them ideal for stuffing with grains, cheese, or other fillings. [source]
Cooking and processing
CulinaryThe substantial flesh makes these peppers excellent for sautéing, grilling, or incorporating into cooked dishes, salsas, and sauces. High yield per plant makes them economical for food preservation. [source]
Vitamin C and antioxidants
MedicinalRed peppers are rich in vitamin C (enhanced after ripening to red) and contain lycopene, capsaicin, and other beneficial compounds with anti-inflammatory properties. [source]
Garden ornament
HouseholdThe large, glossy red peppers are visually striking on productive plants and add beauty to vegetable gardens and containers while providing abundant harvests. [source]
Pollinator attraction
WildlifeThe abundant white flowers attract bees, butterflies, and other pollinators throughout the fruiting season, supporting broader garden ecosystem health. [source]
This is not medical advice. LizPlants is not a medical resource. Always consult a qualified healthcare professional before using plants medicinally.
Harvest Tips
Harvest green peppers 60-70 days after transplant if desired, or allow to ripen fully to deep red for sweeter flavor and higher vitamin C content (70-90 days). Use a knife or pruners to cut peppers from the plant—do not pull to avoid branch damage. Pick regularly to encourage more flowering and fruiting throughout the season. Typical plant produces 3-6 large peppers.
Fun Facts
- 🌱 Red Goliath peppers can weigh up to 10 ounces each, with fruit growing so large and heavy that proper staking and pruning are essential to prevent branches from breaking under the weight.
- 🌱 The transition from green to red pepper indicates not just color change but a 300% increase in vitamin C content and higher natural sugar levels, making red peppers significantly sweeter than green ones.
- 🌱 Red Goliath is an heirloom variety that has been cultivated for decades, prized by gardeners for its reliability, impressive size, and consistent flavor across growing regions.
Gardening Terms
New to gardening? Learn about terms used in this guide:
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